Work-support for grinders



S. E. HOLT. WORK SUPPORT FOR GRINDERS. APPLICATION FILED AUG.23| 1919.

2 SHEETS-SHEET I- INVENTOI? 6:22am e! a. Half I ATTORNEY.

Patented Oct. 18, 1921.

S. E. HOLT. WORK SUPPORT FOR GRINDERS. APPLICATION FILED AUG-23, 1919.

2 SHEETS-SHEET 2.

Ill/VENTUH Qsamu e/ cg /-/o/7'T BY r I c M i Arm/Mr.

Patented Oct. 18, 1921.

PATENT OFFICE.

SAMUEL HOLT, OF RHINEBECK, NEW YORK.

WORK-SUPPORT FOR GRINDER-S.

es on.

Specification of Letters Patent.

Patented Oct. 18, 1921..

Application filed August 23, 1919. Serial No. 319,503.

T 0 all to hom it may concern Be it known that I, SAMUEL E. How, acitizen of the United States, residing at Rhinebeclr, in the county ofDutchess, State of New York, have invented certain new and usefulImprovements in Voila-Supports for Grinders, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to work supports for grinders for use with grindstones, emery wheels and other tool grinding devices, and is designedfor the purpose of supporting or holding the tool to be ground at theproper angle to the wheel.

The object of the invention is to provide a device that shall be simpleof construction, cheap and easy to attach to any of the usual forms ofgrinding stands.

Another object of the invention is to provide a device that may beadjusted to produce any angle desired on the tool to 'be ground, andwhich also may be adjusted to hold tools of different lengths.

With these and other objects in view, the invention consists in certainconstruction and combination of parts as will be fully described andclaimed in the annexed speci fication, and shown in the drawings whichform a part of this application, and in which like figures of referencerefer to corresponding parts in all of the views, but it is fullyunderstood that while I have described my invention as shown that I donot confine myself to the exact design as shown, as slight changes maybe made in the construction and combination of the several parts withoutdeparting from the spirit of the invention.

Referring to'the drawings.

' Figure 1 is a side elevation of a grind stone, showing the deviceattached thereto, and a tool in place for grinding.

Fig. 2 is a plan view of the same, without the tool.

Fig. 3 is a sectional view of the support showing the method of holdingthe adjustable rest.

Fig. 4: is a detail view of a modified form showing a different methodof holding the tool rest.

Fig. 5 is a plan view of the same.

Figs. 6 and 7 show still another form of tool rest.

Referring to the drawings, the usual form of grindstone is indicated bythe numeral 1, and is mounted on the frame 2, in the usual manner. Myinvention comprises a support 3, having one end hingedly secured to theframe adjacent to the grindstone, by suitable means, such as the bolt 4.

Said support 3, is formed with a central slot 5, within which is placeda locking bolt 6, having av T head for engaging the under side of thesupport 3; said bolt passing upward through an adjustable rest block 7,mounted on the upper surface of the support 3, and designed to brace theend of the tool 8, to be ground; said rest being adjustable in relationto the sup-port for tools of difierent lengths, the rest block 7, beingheld by the thumb nut 8.

For adjusting the angle of the support in relation to the grindstone toproduce the required bevel on the tool, there is provided a sector 9,secured to the underside of the support 3, and to the frame 2, by thebolt 10, and nut 11.

Referring to Figs. 4 and 5 of the drawings, the support 3, is providedwith raised edges 12, having a series of teeth or notches 13, and therest block 14, is provided on its lower surface with lugs 15, whichengage the notches 13, and said restblock 14, is held in place by a bolt16, passing through a flat spring 17, bearing against the lower surfaceof said support in such a manner that the rest block 1 1, may be raisedout of engagement with the notches 13, and moved by the fingers withoutloosening the nut 18.

In the modified form shown in Figs. 6 and 7 of the drawings, the support3, is provided with a. shaft 19, threaded for the greater part of itslength and mounted in bearings 20, and 21, in the ends of said support3, and provided with a handle 22.

The rest block 24, has a tongue 25, extending downward in the slot 26,and threaded on said shaft in such a manner that by the rotation of saidshaft 19, the rest block 2 1, is moved up or down on the surface of thesupport.

The operation of the device will be readily seen from the drawings anddescription, and it may be applied not only to grindstones, but to anygrinding or polishing wheel.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is V a The combination with a rotary grinder 5and its supporting frame, of an adjustable work support formedwith alongitudinal slot and pivoted to the frame at its end remote from thegrinder, a stop adjustably mounted in said slot, at depending slotted 10sector at the end of the support adjacent the. grinder, and a clampingbolt in the frame and lying in the slot of the sector for clamping thesupport in adjusted position.

Intestimony whereof I aflix my signature in presence of two witnesses.

SAMUEL E. HOLT.

Witnesses: r VIOLETTE M. CORNELIUS, RAYMOND G. CORNELIUS.

